CN201795785U - Measuring device of space moving point three-dimensional coordinate - Google Patents

Abstract

The utility model discloses a measuring device of a space moving point three-dimensional coordinate, consisting of a rocker arm mechanism 1, a linear displacement sensor 2, a first angle displacement sensor 3, a rotating shaft 4, a second angle displacement sensor 5 and a base 6, wherein the rocker arm mechanism 1 and the linear displacement sensor 2 are connected by a mechanism; when in measuring, a point needing to be measured is connected with an end head 11 of the rocker arm mechanism 1; the linear displacement sensor 2 moves along the movement of the rocker arm mechanism, thus measuring a linear displacement L of the measured point; the first angle displacement sensor 3 is fixed on the rotating shaft 4 by a bracket 41; and the second angle displacement sensor 5 is fixed on the base 6 by a bracket 62, so an elevation angle alpha and a rotating angle beta can be respectively measured. Compared with the prior art which utilizes laser technology to measure generally and has higher cost, the measuring device positions the position of the space point by one linear displacement and two angle displacements, is simpler in installation and measurement and is lower in cost.

Description

A kind of measurement mechanism of spatial movement point three-dimensional coordinate

Technical field

The utility model belongs to fields of measurement.

Background technology

Modern mechanical test, various engineerings etc. need pendulum amplitude of vibration degree, deflection angle of measuring equipment etc.The three-dimensional coordinate measurement device is the device that is used for mechanical vibration test, the measurement of spatial point movement locus.

Technology comparative maturity, extensive employing is laser measuring device for measuring on the present market, and a Laser emission mouth and a target are generally arranged, and the Laser emission mouth can be followed the motion of target automatically.But price comparison costliness.

Summary of the invention

The purpose of this utility model is: for overcoming the function that the expensive shortcoming of laser measurement also can realize measurement space transfer point three-dimensional coordinate, a kind of new spatial point three-dimensional coordinate measurement device simple in structure, with low cost of special development and Design.

The technical solution of the utility model is: a kind of measurement mechanism of spatial movement point three-dimensional coordinate, form by rocker arm body 1, linear movement pick-up 2, first angular displacement sensor 3, rotating shaft 4, second angular displacement sensor 5 and pedestal 6.

Rocker arm body 1 and linear movement pick-up 2 connect by mechanism; Rocker arm body 1 is made up of termination 11, piston rod 12, urceolus 13, and termination 11 is fixed on the piston rod 12, and piston rod 12 can axially move in urceolus 13; Linear movement pick-up is made up of shell 21, pull bar 22, and the shell 21 of linear movement pick-up is fixed on the urceolus 13 of rocker arm body 1, and pull bar 22 is fixed on the piston rod 12 of rocker arm body; The point that will need to measure by bolt during measurement is connected with termination 11; The pull bar 22 of linear movement pick-up 2 is followed the motion of rocker arm body piston rod 12 and is moved, thereby measures the displacement of the lines L of test point; First angular displacement sensor 3 is fixed in the rotating shaft 4 by support 41; Gusset plate 42 1 ends and rocker arm body urceolus 13 link to each other by bolt, and an end links to each other with the rotating shaft of first angular displacement sensor 3, and gusset plate 42 is parallel with rocker arm body urceolus 13, and the angular displacement that first angular displacement sensor 3 records is the angle of elevation alpha of rocker arm body; Second angular displacement sensor 5 is fixed on the pedestal 6 by support 62, and it directly is fixed on the axis of rotating shaft 4; Rotating shaft 4 is fixed on the pedestal 6 by cover plate 61, bearing 63, back nut 64, top board 65, and rotating shaft 4 can be rotated flexibly around self axis, but can not axially move; The axle that the rotation of rotating shaft 4 drives second angular displacement sensor 5 rotates, and can record rotational angle β.

If linear movement pick-up null displacement place benchmark coordinate (z0), then the coordinate of measured point is for x0, y0:

$\left\{\begin{array}{c}x=x_0+L\cos \mathrm{\α}\cos \mathrm{\β}\\ y=y_0+L\cos \mathrm{\α}\sin \mathrm{\β}\\ z=z_0+L\sin \mathrm{\α}\end{array}\right.$

The advantage that the utlity model has with beneficial effect is: measure with prior art general using laser technology, cost compares than higher, this device is located the position of spatial point by a displacement of the lines and two angular displacements, installation and measurement are all fairly simple, and cost is also lower.

Description of drawings

Fig. 1 is the utility model measurement mechanism front view;

Fig. 2 is the utility model measurement mechanism rocker arm body and linear movement pick-up combination synoptic diagram;

Fig. 3 is the utility model measurement mechanism stereographic map;

Fig. 4 is the sectional view of the utility model measurement mechanism left view.

Embodiment

Below in conjunction with drawings and Examples the present invention is described in detail.

As shown in Figure 1, a kind of measurement mechanism of spatial movement point three-dimensional coordinate is made up of rocker arm body 1, linear movement pick-up 2, first angular displacement sensor 3, rotating shaft 4, second angular displacement sensor 5 and pedestal 6.

Rocker arm body 1 and linear movement pick-up 2 are formed as shown in Figure 2 by the displacement of the lines that mechanism connects measurement point.Rocker arm body 1 is made up of termination 11, piston rod 12, urceolus 13, and termination 11 is fixed on the piston rod 12, and piston rod 12 can axially move in urceolus 13.The point that will need to measure by bolt during measurement is connected with termination 11.The shell 21 of linear movement pick-up is fixed on the urceolus 13 of rocker arm body, and pull bar 22 is fixed on the piston rod 12 of rocker arm body.The pull bar of linear movement pick-up 2 is followed the motion of rocker arm body piston rod 12 and is moved, thereby measures the displacement of the lines L of test point.

The installation of first angular displacement sensor 3 as shown in Figure 3.First angular displacement sensor 3 is fixed in the rotating shaft 4 by support 41; Gusset plate 42 1 ends and rocker arm body urceolus 13 link to each other by bolt, and an end links to each other with the rotating shaft of first angular displacement sensor 3, and gusset plate 42 is parallel with rocker arm body urceolus 13.The angular displacement that first angular displacement sensor 3 records is the angle of elevation alpha of rocker arm body.

As shown in Figure 4, second angular displacement sensor 5 is fixed on the pedestal 6 by support 62, and it directly is fixed on the axis of rotating shaft 4.Rotating shaft 4 is fixed on the pedestal 6 by cover plate 61, bearing 63, back nut 64, top board 65, and rotating shaft 4 can be rotated flexibly around self axis, but can not axially move.The axle that the rotation of rotating shaft 4 drives second angular displacement sensor 5 rotates, and therefore can record rotational angle β.

If linear movement pick-up null displacement place benchmark coordinate (z0), then the coordinate of measured point is for x0, y0:

$\left\{\begin{array}{c}x=x_0+L\cos \mathrm{\α}\cos \mathrm{\β}\\ y=y_0+L\cos \mathrm{\α}\sin \mathrm{\β}\\ z=z_0+L\sin \mathrm{\α}\end{array}\right..$

Claims (3)

1. the measurement mechanism of a spatial movement point three-dimensional coordinate, form by rocker arm body (1), linear movement pick-up (2), first angular displacement sensor (3), rotating shaft (4), second angular displacement sensor (5) and pedestal (6), it is characterized in that rocker arm body (1) and linear movement pick-up (2) connect by mechanism; Rocker arm body (1) is made up of termination (11), piston rod (12), urceolus (13), and termination (11) are fixed on the piston rod (12), and piston rod (12) can axially move in urceolus (13); Linear movement pick-up is made up of shell (21), pull bar (22), and the shell of linear movement pick-up (21) is fixed on the urceolus (13) of rocker arm body (1), and pull bar (22) is fixed on the piston rod (12) of rocker arm body; The point that will need to measure by bolt during measurement is connected with termination (11); The pull bar (22) of linear movement pick-up (2) is followed the motion of rocker arm body piston rod (12) and is moved, thereby measures the displacement of the lines L of test point.

2. the measurement mechanism of spatial movement point three-dimensional coordinate as claimed in claim 1 is characterized in that, a described angular displacement sensor (3) is fixed in the rotating shaft (4) by support (41); Gusset plate (42) one ends link to each other by bolt with rocker arm body urceolus (13), one end links to each other with the rotating shaft of first angular displacement sensor (3), gusset plate (42) is parallel with rocker arm body urceolus (13), and the angular displacement that first angular displacement sensor (3) records promptly is the angle of elevation alpha of rocker arm body.

3. the measurement mechanism of spatial movement point three-dimensional coordinate as claimed in claim 1 is characterized in that, described second angular displacement sensor (5) is fixed on the pedestal (6) by support (62), and its axle directly is fixed on the axis of rotating shaft (4); Rotating shaft (4) is fixed on the pedestal (6) by cover plate (61), bearing (63), back nut (64), top board (65), and rotating shaft (4) can be rotated flexibly around self axis, but can not axially move; The axle that the rotation of rotating shaft (4) drives second angular displacement sensor (5) rotates, and can record rotational angle β.

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